/// <summary>
/// 执行给定的NodePath的child变化事件
/// </summary>
/// <param name="path">nodePath</param>
/// <param name="childListeners">child变化监听器集合</param>
private void FireChildChangedEvents(string path, ConcurrentHashSet <IZkChildListener> childListeners)
{
try
{
//重新注册子节点变化监听器
foreach (var l in childListeners)
{
var listener = l;
_eventThread.Send(new ZkEvent("Children of " + path + " changed sent to " + listener)
{
RunAction = () =>
{
try
{
// if the node doesn't exist we should listen for the root node to reappear
Exists(path);
var children = this.GetChildren(path);
listener.HandleChildChange(path, children);
}
catch (ZkNoNodeException)
{
listener.HandleChildChange(path, null);
}
}
});
}
}
catch (Exception e)
{
Logger.Error("Failed to fire child changed event. Unable to getChildren. ", e);
}
}
public void Run()
{
System.Diagnostics.Debug.WriteLine("Starting ZkClient event thread.");
try
{
while (!this.tokenSource.IsCancellationRequested)
{
ZkEvent zkEvent = this._events.Take();
int eventId = this._eventId.GetAndIncrement();
System.Diagnostics.Debug.WriteLine("Delivering event #" + eventId + " " + zkEvent);
try
{
zkEvent.RunAction();
}
catch (ThreadInterruptedException)
{
this.tokenSource.Cancel();
}
catch (Exception e)
{
Logger.Error("Error handling event " + zkEvent, e);
}
System.Diagnostics.Debug.WriteLine("Delivering event #" + eventId + " done");
}
}
catch (ThreadInterruptedException)
{
System.Diagnostics.Debug.WriteLine("Terminate ZkClient event thread.");
}
}
